Intel Corporation

Gregory V Rose

James Robert Feddeler

Zahid Ahsanullah

Patrick G Kutch

Management of access to input/output devices by a virtual machine (VM) includes executing a hypervisor, and instantiating the VM to execute under supervision of the hypervisor. The VM is to include an I/O device-agnostic (IODA) driver that is configured to interface with the I/O device via a first path according to a set of operational parameters specific to the I/O device, and to interface with the hypervisor via a second path. The IODA driver is to configure the operational parameters to comport with an operational protocol of the I/O device based on device-description information provided to the IODA driver via the second path.

Device-agnostic driver for virtual machines

Power saving method is achieved by weakly holding a signal line in its last in time state, which is responsive to and may be overcome by the state of an external signal. During sleep mode, the weakly held signal line state tracks and holds the external signal using alternatively a controllable weak pull-up or pull-down device, such that weakly held state may be driven to a different state by the external driving signal with slight power consumption. When sleep mode is off, the keeper function is disabled and the signal line maybe driven alternatively internally or externally depending upon the state of an enable line.

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Hillsboro, OR, United States of America

Gregory V Rose